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Nv H. LEBBY, OF CHARLESTON, SOUTH CAROLINA.

Letters Patent No. 68,214,'dated August 27, 1867.

IMPROVEMENT IN CENTRIFUGAL PUMPS. ,I

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TO ALL WHOM IT MAY CONCERN:

Be it known that I, N. H. LEBBY, of Charleston, in the County ofCharleston, and State of South Carolina., have invented a new and usefulImprovement in Pump; and I do hereby declare that the following is afull, clear, and exact description thereof, which will enable othersskilled in the art to make and use the same, reference being had to theaccompanying drawings, forming part of this specification. i

- The present invention consists in so constructing a centrifugal pump,so far as it relates to the hanging of the wheel and its arrangement orattachment within its casing, that the wheel can be freely and easilyremoved for the purpose of clearing the pump-wheel, if it should becomechoked, whereby the use of a strainer is dispensed with, which, as iswell known, often becomes choked, and occasioning much trouble tocleanse it owing to its location under or within the water. Inthe-accompanying plate of drawings my improvement in pumps isillustrated- Figure 1 being a view or elevation of the outside of thecasing to the pump-wheel, showing the connecting parts for driving it,and

Figure 2 a transverse vertical section, taken in the plane of the line:u x, fig. 1.

Similar letters of reference indicate like parts.

A, in the drawings, represents the casing to the pump-wheel, which, inshape, is to be suitable to receive the said wheel. B, one head-plate tothe wheel-casing, on which plate the wheel is arranged to revolve, andhas its shaft C extended through it. This plate B, by means of lugs D,is secured`in place under the catches E aixed to the head of thecylinder or casing A by simply turning the said plate B around sucientlytherefor. The wheel-shaft C extends through a hollow shaft ordrum, F,carrying a pulley, G. This hollow shaft turns in bearings of uprights G,and with this shaft, when the wheel is in position within its casing,the shaft of such wheel is clutched at its end H by the clutch I. Byturni-ng the head-plate. around sufficiently to relieve it from thecatches upon the casing, for driving which a: handle, J, is attachedthereto, andl `then sliding the wheel outward or its sha-ft through thehollow drum or shaft, the whole shaft can be'unclutched from the saiddrum, and thus, without stopping the motion ofthe drum-pulley, the wheelcan be brought into a position for being cleared, if choked, whilerunning.

I claim as new, and desire to secure by Letters Patent- The head-plateB, provided with lugs D, in combination with the catches E, shaft O,drum F, and clutches H I, substantially as described for the purposespecified.

N. H. LEBBY.

Witnesses:

H. A. DUc,'Jr., P. FLYNN.

